Dual battery setup

[98 2-DOOR]

Anybody have a dual battery setup, simple? Just need to add second battery for winch only.

 

[_Dylan_]

I was going to use a setup like this on an old truck I had but I never got around to it. It uses a dual battery switch for a boat to separate both batteries for charging.

I've heard of problems using two batteries constantly. Problems charging, problems with different size/age batteries, etc. The switch cuts power to one of the batteries...less problems.
http://www.ifish.net/gallery/data/500/StandardBatterySwitchWiring.jpg

 

[ESCALADE200224]

If Its easy enough I'd like to have two battery's one for constant use then one backup like in my boat. If anyone has done this please post!

 

[SunlitComet]

I assume you want them isolated correct? I have not done mine yet need money but mainly I have not come up with a product that serves my specific needs without costing more then $1000.

 

[98 2-DOOR]

yes, isolated...

 

[SunlitComet]

do you need anything like automatic charging control or dual battery amperage availability when say starting or something like that?

 

[ESCALADE200224]

My question is would I need more than one alternator? Or will mine over charge the batteries and brake.

 

[SunlitComet]

one alternator, two batteries at about same size and capacity and a basic diode isolator will do you just fine.

 

[moviewithnotitle]

http://www.hellroaring.com/bic75150.php

 

[98 2-DOOR]

ok, so i went to a local audio shop and they said that all i needed was an isolator. so i pick up a 200amp stinger isolator, associated battery cables and connectors. i already upgraded my alternator to a 200amp, now all i need to do is hook it all up...standby...

 

[nobsobs98]

Did a dual optima yellow top set up, direct connection with 0awg, have a 200 amp alternator, been in for a month now, no problems whatsoever. Took about an hour to set up, I have no reason to isolate.

Some pictures

 

[98 2-DOOR]

Finally finished install...I did put the isolator in so that i will always have one good battery for start up. Without the isolator, both batteries drain no matter what i would be using. Seems to be working great, i'll follow up with some pics shortly, relatively clean install. The only thing i want to add to the is a battery on/off switch for the winch to eliminate any possibility of anything shorting out and burning up (heard horror stories).

 

[98 2-DOOR]

here's the pics...fairly simple install.

 

[kaoticlife]

98 2-door, I did the dual battery install and did the install of my mrk8 fan. my question is when I turn my a/c on it kicks the fan on high which is what I want but it pulls my volts on the meter to 11 with a/c on full blast and fan running (all at idle) have any problem with that? and will the big 3 help?

 

[SunlitComet]

almost all who have efans will suffer from that if you have a 105 amp nator. a larger one would help alleviate that. regardless it will be more noticeable when it is hot outside as the regulator drops the charging power as it gets hotter out. also depends on where you linked in your fan wiring to.

 

[kaoticlife]

almost all who have efans will suffer from that if you have a 105 amp nator. a larger one would help alleviate that. regardless it will be more noticeable when it is hot outside as the regulator drops the charging power as it gets hotter out. also depends on where you linked in your fan wiring to.

sheez always hot in florida. lol ....I hooked fan directly to main battery and ingnition source on fuse panel under hood, also green wire to a/c pressor. what about a 140 (I think thats the one right?) amp alternator for a say 99 escalade or 99 denali?

 

[SunlitComet]

same as me and a good wire route a 140 amper would help out. i used the the nbs 145 amp unit. and during cold weather it can handle everything on while at idle. in hot weather it suffers a little but not as much as the old 105a did. being as how you have dual batteries and may occasionally drain the hell out of one during normal use(assuming they are isolated. but it does not sound like it based on your previous sayings) you would need more power to recover just as fast son you may want to consider larger.

 

[kaoticlife]

same as me and a good wire route a 140 amper would help out. i used the the nbs 145 amp unit. and during cold weather it can handle everything on while at idle. in hot weather it suffers a little but not as much as the old 105a did. being as how you have dual batteries and may occasionally drain the hell out of one during normal use(assuming they are isolated. but it does not sound like it based on your previous sayings) you would need more power to recover just as fast son you may want to consider larger.

SUN I hooked the 2nd battery to the aux post on the back of the fuse box. I was considering a battery isolator as they are readily available here with so many boats and all. and a nbs 145? whats the part number tyf yoda?

 

[SunlitComet]

www.amazon.com/gp/product/B002QVHN7O/

 

[kaoticlife]

www.amazon.com/gp/product/B002QVHN7O/

straight up plug and play? that would be sweet! I am gonna more than likely get rid of the giant box in the back and get rid of the huge audiobahn sub amp and go with a smaller set up anyway. so that might just work out for me! Thanks